mmc: Allow host drivers to specify a max block size

Most controllers have an upper limit on the block size. Allow the host
drivers to specify this and make sure we avoid hitting this limit.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/mmc/pxamci.c b/drivers/mmc/pxamci.c
index 6073d998b11f..9fc9aed1a5ef 100644
--- a/drivers/mmc/pxamci.c
+++ b/drivers/mmc/pxamci.c
@@ -450,6 +450,11 @@ static int pxamci_probe(struct platform_device *pdev)
          */
         mmc->max_seg_size = PAGE_SIZE;
 
+        /*
+         * Block length register is 10 bits.
+         */
+        mmc->max_blk_size = 1023;
+
         host = mmc_priv(mmc);
         host->mmc = mmc;
         host->dma = -1;